Head and Body Size Relationships in Polymorphic Tiger Salamander Larvae from Colorado

Copeia ◽  
1998 ◽  
Vol 1998 (4) ◽  
pp. 1089 ◽  
Author(s):  
Judy P. Sheen ◽  
Howard H. Whiteman
Keyword(s):  
Body Size ◽  
Tiger Salamander ◽  
Salamander Larvae

Foraging under the risk of cannibalism leads to divergence in body size among tiger salamander larvae

Oecologia ◽  
2000 ◽  
Vol 124 (2) ◽  
pp. 225-231 ◽  
Author(s):  
R. E. Ziemba ◽  
M. T. Myers ◽  
J. P. Collins
Keyword(s):  
Body Size ◽  
Tiger Salamander ◽  
Salamander Larvae

Morphology and escape performance of tiger salamander larvae (Ambystoma tigrinum mavortium)

2003 ◽  
Vol 297A (2) ◽  
pp. 147-159 ◽  
Author(s):  
Benjamin M Fitzpatrick ◽  
Michael F. Benard ◽  
James A. Fordyce
Keyword(s):  
Ambystoma Tigrinum ◽  
Tiger Salamander ◽  
Escape Performance ◽  
Salamander Larvae

Trophic Control of Fishless Ponds by Tiger Salamander Larvae

Oikos ◽  
1994 ◽  
Vol 71 (1) ◽  
pp. 55 ◽  
Author(s):  
Joseph R. Holomuzki ◽  
James P. Collins ◽  
Paul E. Brunkow
Keyword(s):  
Tiger Salamander ◽  
Salamander Larvae

Effects of rainbow trout (Oncorhynchus mykiss) on amphibians in productive recreational fishing lakes of British Columbia

2007 ◽  
Vol 64 (12) ◽  
pp. 1770-1780 ◽  
Author(s):  
Joanna Lynne McGarvie Hirner ◽  
Sean P Cox
Keyword(s):  
British Columbia ◽  
Rainbow Trout ◽  
Body Size ◽  
Oncorhynchus Mykiss ◽  
Relative Abundance ◽  
Amphibian Conservation ◽  
Recreational Fishing ◽  
Study Region ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Salamander Larvae

Stocking lakes with trout to enhance recreational fishing can negatively affect native aquatic species. Our objectives were (i) to compare presence, relative abundance, body size, and developmental stage of amphibians in lakes with and without rainbow trout (Oncorhynchus mykiss) in British Columbia’s southern interior, and (ii) to estimate the size of trout impact for application to amphibian conservation. Presence of long-toed salamander (Ambystoma macrodactylum), Columbia spotted frog (Rana luteiventris), and Pacific treefrog (Pseudacris regilla) was not significantly different between lake types. In contrast, western toad (Bufo boreas) larvae presence and relative abundance were significantly higher in lakes with trout. Relative abundance of salamander larvae was significantly lower in lakes with trout, but hypothesis testing did not provide consistent evidence of significantly lower abundances of spotted frog and treefrog larvae. However, estimated ratios of relative abundance (impact) indicated that larvae of the salamander and two frogs were ≥65% less abundant in lakes with trout. Salamander larvae were significantly smaller in lakes with trout. Although amphibians may currently coexist with trout in our study region, trout stocking policy in British Columbia should consider amphibian conservation because the presence of trout is associated with lower amphibian abundance and body size in individual lakes.

scholarly journals Temperature Variation and Species Interactions in Aquatic Systems in Grand Teton National Park

1992 ◽  
Vol 16 ◽  
pp. 140-145
Author(s):  
Bruce Woodward ◽  
Sandra Mitchell
Keyword(s):  
Body Size ◽  
Temperature Variation ◽  
Growth Rates ◽  
Species Interactions ◽  
National Park ◽  
Simple Experiment ◽  
Grand Teton National Park ◽  
Caddisfly Larvae ◽  
Body Sizes ◽  
Salamander Larvae

Temperature variation and species interactions were examined in small montane ponds in Grand Teton National Park during summer 1991. Temperature variation was pronounced, both over time and from place to place within one pond or across ponds. The magnitude of the temperature variation is such that it is likely to lead to large differences in the growth rates of poikilotherms that occupy these ponds. Growth rates determine body sizes at any one point in time. Tadpole body size influenced the probability of predation by salamander larvae in these montane ponds in Grand Teton National Park. Given the natural body size ratios of predator and prey (observed in 1991}, salamanders biased predation towards smaller tadpoles. Other predation experiments revealed that the salamander larvae biased predation towards tadpoles and away from damselfly naiads. This suggests that damselflies may experience lower predation by salamanders when in the presence of tadpoles than when in the absence of tadpoles. Several species, including snails, caddisfly larvae, and tadpoles were very abundant in some ponds, but could be essentially absent from others. These three taxa appear to share similar diets. A simple experiment revealed the Pseudacris tadpoles and the snails compete, and that presence of salamander larvae had no effect on the strength of their competitive interaction.

Adolescent Gender Differences in Weight, Activity, and Body-Size Perception

2012 ◽  
Author(s):  
Judith R. Mccalla ◽  
Katie E. Chipungu ◽  
Patrice G. Saab ◽  
Amanda J. Countryman ◽  
Erin N. Etzel ◽  
...  
Keyword(s):  
Gender Differences ◽  
Body Size ◽  
Size Perception ◽  
Body Size Perception
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